Light therapy systems and methods

ABSTRACT

Devices and methods for light therapy wherein a device for delivery of light therapy comprising a light emitting pad member (e.g., a blanket or other body cover) is positionable over all, substantially all or at least half of a subject&#39;s body and operable to deliver light therapy thereto.

RELATED APPLICATION

This application claims priority to U.S. Provisional Patent Application No. 62/861,894 entitled Light Therapy Systems and Methods filed Jun. 14, 2019, the entire disclosure of which is expressly incorporated herein.

FIELD OF THE INVENTION

The present disclosure relates generally to the fields of physics, electronics, biology and medicine and more particularly to devices and methods for delivering light therapy to humans or animals.

BACKGROUND

Pursuant to 37 CFR 1.71(e), this patent document contains material which is subject to copyright protection and the owner of this patent document reserves all copyright rights whatsoever.

Light therapy (i.e., “phototherapy”), using various types of light, has been used or proposed for use in a number of cosmetic and therapeutic applications, including but not necessarily limited to treatment of musculoskeletal pain, improvement of skin elasticity, deterrence of skin aging, treatment of dermatological disorders (e.g., acne, psoriasis), healing of wounds, treatment of jaundice in newborns, and treatment of certain psychological conditions such as seasonal affective disorder (SAD) and certain sleep disorders. In some applications, light therapy is used alone while in others it is used in combination with drugs or agents (e.g., photo-sensitizing agents, photo-activating agents, agents which reduce skin opacity or improve light penetration through or into the skin, etc.).

Examples of light therapy systems include those described in U.S. Pat. No. 8,900,283 (Johnson) and U.S. Pat. No. 9,968,799 (Johnson), the entire disclosures of which are expressly incorporated herein by reference.

SUMMARY

Some embodiments relate to a device for delivery of light therapy which includes or comprises; a pad member (e.g., a blanket or other body cover) configured to extend over the body of a subject; a plurality of light emitters configured to emit light from a light-emitting side of the pad member; a control unit; and a user interface which comprises a treatment mode selector useable to select a light treatment mode from a plurality of available light treatment modes; wherein the control unit receives signals from the user interface and, in response to those signals, sends control signals to the light emitters to cause the light emitters to emit light in accordance with the selected light treatment mode. The device may be flexible and/or formable into desired shapes.

In some embodiments, the pad member (e.g., blanket or other body cover) may be configured to extend over all, substantially all or more than half of the subject's body.

In some embodiments, a top end of the pad member may be configured to include a central protrusion and lateral shoulder portions such that, when the pad member may be draped or positioned over the body of a subject with the shoulder portions positioned over the subject's right and left shoulders and the central protrusion extending over at least part of the subject's neck. Optionally, the central portion may be flexed or formed into a downwardly arched configuration so that contacts or conforms to the shape of an anterior surface of the subject's neck and an inferior aspect of the subject's chin. Optionally, the central protrusion may be configured such that it may be flexed or formed to a longitudinally straight, transversely curved configuration so that it contacts or conforms to the shape of the subject's face, thereby providing light therapy to the face.

In some embodiments, a bottom end of the pad member may comprise or include bottom end downwardly protruding leg portions separated by an open area. Optionally the leg portions may be configured to cover legs, ankles and/or feet of a subject. Optionally, the leg portions may be flexed or formed to shapes which conform to surfaces of a subject's legs, ankles and/or feet.

In some embodiments, the pad member may include or comprise a plurality of interconnected light-emitting units such as circuit boards, non-limiting examples of which are described in U.S. Pat. No. 8,900,283 (Johnson) and U.S. Pat. No. 9,968,799 (Johnson), which are expressly incorporated herein. The light emitting units (e.g., circuit boards) may be electrically connected to each other and controlled in unison to deliver a desired light therapy.

In some embodiments, the device may comprise a light therapy blanket or body cover configured to cover all, substantially all or at least half of a subject's body and to deliver light therapy thereto. Optionally, all or part of the blanket or body cover may be flexible or formable to a configuration which conforms to a shape of an anatomical portion of the subject's body. Optionally, the light emitting blanket or body cover may include or comprise a plurality of interconnected light-emitting units such as circuit boards, non-limiting examples of which are described in U.S. Pat. No. 8,900,283 (Johnson) and U.S. Pat. No. 9,968,799 (Johnson), which are expressly incorporated herein. The light emitting units (e.g., circuit boards) may be electrically connected to each other and controlled in unison to deliver a desired light therapy.

The present disclosure further includes methods for making and using the devices for delivery of light therapy. In some embodiments of a method for use, the device for delivery of light therapy is positioned over or under all, substantially all or at least half of a subjects body and operated to deliver light therapy thereto.

Further elements and aspects of the present disclosure are appreciable from the following detailed description and the accompanying drawings to which is refers.

BRIEF DESCRIPTION OF THE DRAWINGS

The following drawings are included in this patent application and referenced in the Detailed Description below. These drawings are intended only to illustrate certain aspects or embodiments of the present disclosure and do not limit the scope of the present disclosure in any way:

FIG. 1 shows one embodiment of a light therapy device positioned in a first position over a body of a human subject.

FIG. 2 shows the light therapy device of FIG. 1 positioned in a second position over the body of the human subject.

FIG. 3 shows one size of another embodiment of a light therapy device.

FIG. 4 shows another (larger) size of the embodiment seen in FIG. 3.

FIG. 5 shows a top perspective exploded view of the light therapy device embodiment of FIGS. 3/4.

FIG. 6 shows a bottom perspective exploded view of the light therapy device embodiment of FIGS. 3/4.

FIG. 7 shows a component of the light therapy device embodiment of FIGS. 3/4.

FIG. 8 is an exploded view of a top portion of the light therapy device embodiment of FIGS. 3/4 showing the manner in which the component of FIG. 7 is incorporated into the device.

DETAILED DESCRIPTION

The following detailed description and the accompanying drawings to which it refers are intended to describe some, but not necessarily all, examples or embodiments of the present disclosure. The described embodiments are to be considered in all respects only as illustrative and not restrictive.

Disclosed are light therapy systems and methods wherein a light emitting device comprising a light emitting pad member is sized and configured to extend over at least part of a subject's body. In some embodiments the light emitting pad may be configured to extend over all, substantially all or more than half of the subject's body.

As used herein the term “pad member” is to be interpreted broadly and shall include any suitable structure including, but not necessarily limited to, flexible flat or planar structures, pads, mats, panels, sheets, blankets, etc. Light emitters, such as light emitting diodes (LEDs), emit light from one side (i.e., a light-emitting side) of the pad. The pad may be positioned under or over the body of a subject such that light which emanates from the light-emitting side of the pad is cast on the subject body thereby providing light therapy. Optionally, the pad may be flexible and one or more shapeable member(s) may be positioned on or in region(s) of the pad to render such region(s) of the pad formable into shape(s) which conform to a body part of the subject or which facilitate placement on or in abutment with an underlying or adjacent surface.

Referring to FIGS. 1 through 8, there are shown non-limiting examples of light emitting devices of the present invention. FIGS. 1 and 2 show one embodiment of a light therapy device 10 a having a top end TE which is configured to include a central protrusion 12 and lateral shoulder portions 14. In FIG. 1, the device 10 a is draped or positioned over the body of a subject S such that the shoulder portions 14 of the device 10 a are positioned over the subject's right and left shoulders and a central protrusion 12 of the device 10 a is formed to a downwardly arched configuration so that contacts or conforms to the shape of an anterior surface of the subject's neck and an inferior aspect of the subject's chin, thereby providing light therapy to the neck and chin as well as other portions of the body covered by the device 10 a. FIG. 2 shows the same device 10 a with the central protrusion 12 formed to a longitudinally straight, transversely curved configuration so that it contacts or conforms to the shape of the subject's face, thereby providing light therapy to the face as well as other portions of the body covered by the device 10 a.

As explained more fully below, the central protrusion 12 and/or other region(s) of the device 10 a may optionally comprise a shapeable (e.g., plastically deformable) material or member which allows it to be manually shaped to and thereafter retain a desired configuration (e.g., the downwardly arched configuration of FIG. 1 or the straight configuration of FIG. 2) without the need for a separate belt or retainer to hold the device 10 a in the desired configuration or to prevent the device 10 a from springing back or otherwise drifting or changing from the desired configuration.

FIGS. 3 through 8 show another light therapy device 10 b having alternative configurations of the top and bottom ends TE, BE. In this embodiment of the device 10 b, the top end TE is generally trapezoidal with rounded corners and the bottom end BE has downwardly protruding leg portions 16 separated by an open area 18.

In any embodiments, the overall size of the device 10 a or 10 b may vary, as illustrated by the showings of FIGS. 3 (small size) and 4 (large size).

As will be appreciated by those of skill in the art, light therapy device 10 a, 10 b of this invention may be constructed in various ways using various materials and components. FIGS. 5 through 8 show one non-limiting example of a mode of construction of light therapy device 10 b, wherein the light emitting pad member comprises a pad 20 which may be formed of any suitable material such as a closed-cell flexible polymer foam, a formable member 22 made of aluminum or any other suitable deformable material (e.g., memory material, bendable material, malleable material, shapeable material, etc.), a plurality of light emitting circuit boards 24, translucent circuit board cover members 26 such as sheets of clear or translucent polycarbonate material, and a bezel 28, which may be formed of material that is the same, or different from, that of pad 20.

At the time of manufacture, cavities or depressions configured to receive the light emitting circuit boards 24 are formed in one side of pad 20 and the circuit boards 24 are positioned in those cavities or depressions such that light emitted by light emitters on the circuit boards 24 will be cast away from the underlying pad 20. The circuit boards 24 are electrically connected to one another by wires, cables or other suitable means. A suitable adhesive may be applied to affix the circuit boards 24 and/or interconnecting wires or cables to the underlying pad 20.

The formable member 22 is positioned on the surface of the pad 20 in an upper portion adjacent the top end TE, as shown.

The translucent circuit board cover members 26 are placed over the circuit boards 24 such that light emitted from the circuit boards 24 will be cast through the translucent circuit board cover members 26.

Bezel 28 is then attached, by adhesive or any other suitable means, to the pad 20 such that the translucent circuit board cover members 26 and the light-emitters of the underlying circuit boards 24 are aligned with apertures 30 in the bezel 28 and the formable member 22 is held in place between the pad 20 and bezel 28. This creates a unitary pad structure which incorporates pad 20, formable member 22, interconnected circuit boards 24, translucent circuit board covers 26 and bezel 28.

In the example shown, the formable member 22 is formed of a deformable or malleable metal and comprises an arcuate mid-portion 40 traversing between two generally triangular end portions 42. Rings 44 are formed within each of the triangular end portions 42, as shown. This structure allows an upper portion adjacent to the top end TE of the device 10 b to be manually shaped to desired shapes to accommodate the shoulders, neck, chin and/or face areas of a subject.

Optionally, one or more apertures, loops, straps, hooks or other hanger features may be provided to facilitate hand holding of the device 10 a, 10 b and/or hanging of the device 10 a, 10 b, such as on peg(s), hook(s) or other projection(s), when not in use. In the example shown, apertures 32 extend through the device 10 b at spaced apart locations. Such apertures pass through the pad 20, through the rings 32 of the formable member 22 and through the bezel 28. Snap rings, grommets or other cylindrical members 36 may be placed in or around the apertures 30 to line, reinforce and/or add structural integrity to the areas surrounding the apertures 30. Optionally additional apertures may be formed on one or both sides of the device, near the side edges of the pad, to serve as handles for carrying the device 10 a, 10 b. Such optional additional apertures, if present, may be of ovoid or oblong shape suitable for passage of a user's fingers therethrough while carrying the device 10, 10 b.

The interconnected circuit boards 24 are connected by cable 40 to a control unit C which is connectable by power cord PC to a power outlet. A strain relief member 34 may be provided at an opening 33 in the device 10 b through which the cable 40 extends. The control unit C may comprise or communicate with a user interface a user interface which comprises a treatment mode selector useable to select a light treatment mode from a plurality of available light treatment modes. The control unit C receives signals from the user interface and is programmed to send, in response to those received signals, control signals to the light emitting circuit boards 24 to cause light emitters on the circuit boards 24 to emit light in accordance with the selected light treatment mode. Non-limiting examples of control units/user interfaces, light emitting circuit boards, light emitters, cable(s) and other components as well as examples of control unit programming and therapeutic light therapy modes/methods that may be used in devices 10 a, 10 b of the present invention, are described and shown in incorporated U.S. Pat. No. 8,900,283 (Johnson) and U.S. Pat. No. 9,968,799 (Johnson). As described, the light emitters may comprise red, blue and infrared (e.g., near infrared) light emitters and the control unit may be programmed to cause the light emitters to alternately operated in a number of selectable light treatment modes. For example, such modes may include a first mode wherein the light emitted from the housing is primarily blue; a second mode wherein the light emitted from the housing is primarily red; and a third mode wherein the light emitted from the housing is primarily infrared. The infrared light emitters may emit near infrared light it a wavelength of, or of about, 880 nm. The red light emitters may emit light at a wavelength of, or of about, 640 nm. The blue light emitters may emit light at a wavelength of, or of about, 465 nm. The control unit may be programmed to operate the device 10 a, 10 b in a plurality of selectable modes such as, for example, a first light treatment mode wherein blue light emitters emit blue light at a 1% duty cycle and red and infrared light emitters repeatedly fade up from 1% to 90% in 20 seconds; a second light treatment mode wherein the blue light emitters repeatedly fade up from 1% to 90% in 20 seconds and the red and infrared light emitters repeatedly fade up from 1.3% to 2.5% in 2.5 seconds; and a third light treatment mode wherein blue light emitters repeatedly fade up from 1% to 90% in 20 seconds and red and infrared light emitters cycle from 30% to 80% in 11.5 seconds. The control unity may also be programmed to enable the device 10 a. 10 b to alternately operate in pulsed or non-pulsed modes. When operating in a pulsed mode the device 10 a, 10 b may, for example, deliver pulsed light at a pulse width modulation frequency of about 680 Hz.

It is to be appreciated that, although the above disclosure refers to certain examples or embodiments, various additions, deletions, alterations and modifications may be made to those described examples and embodiments without departing from the intended spirit and scope of the invention. For example, any elements, steps, members, components, compositions, reactants, parts or portions of one embodiment or example may be incorporated into or used with another embodiment or example, unless otherwise specified or unless doing so would render that embodiment or example unsuitable for its intended use. Also, where the steps of a method or process have been described or listed in a particular order, the order of such steps may be changed unless otherwise specified or unless doing so would render the method or process unsuitable for its intended purpose. Additionally, the elements, steps, members, components, compositions, reactants, parts or portions of any invention or example described herein may optionally exist or be utilized in the absence or substantial absence of any other element, step, member, component, composition, reactant, part or portion unless otherwise noted. All reasonable additions, deletions, modifications and alterations are to be considered equivalents of the described examples and embodiments and are to be included within the scope of the following claims. 

What is claimed is:
 1. A device for delivery of light therapy, said device comprising: a pad member configured to extend over the body of a subject; a plurality of light emitters configured to emit light from a light-emitting side of the pad member; and a control unit; and a user interface which comprises a treatment mode selector useable to select a light treatment mode from a plurality of available light treatment modes; wherein the control unit receives signals from the user interface and, in response to those signals, sends control signals to the light emitters to cause the light emitters to emit light in accordance with the selected light treatment mode.
 2. A device according to claim 1 wherein the user interface further comprises a pulse/non-pulse switch useable to select delivery of either pulsed or non-pulsed light and wherein the control unit is further programmed to cause the light emitters to emit either pulsed or non-pulsed light in accordance with user selection.
 3. A device according to claim 1 wherein the control unit is further programmed to cause the light emitters to stop emitting light after expiration of a time period.
 4. A device according to claim 1 wherein the light emitters comprise red, blue and infrared light emitters and wherein the plurality of available light treatment modes comprises: a first mode wherein the light emitted from the housing is primarily blue; a second mode wherein the light emitted from the housing is primarily red; and a third mode wherein the light emitted from the housing is primarily infrared.
 5. A device according to claim 4 wherein the infrared light emitters emit near infrared light it a wavelength of, or of about, 880 nm.
 6. A device according to claim 4 wherein the red light emitters emit light at a wavelength of, or of about, 640 nm.
 7. A device according to claim 4 wherein the blue light emitters emit light at a wavelength of, or of about, 465 nm.
 8. A device according to claim 4 wherein: when operating in the first light treatment mode, the blue light emitters emit blue light at a 1% duty cycle and the red and infrared light emitters will fade up from 1% to 90% in 20 seconds; when operating in the second light treatment mode, the blue light emitters will fade up from 1% to 90% in 20 seconds and the red and infrared light emitters will fade up from 1.3% to 2.5% in 2.5 seconds; and when operating in the third light treatment mode, the blue light emitters will fade up from 1% to 90% in 20 seconds and the red and infrared light emitters will cycle from 30% to 80% in 11.5 seconds.
 9. A device according to claim 8 wherein the user interface further comprises a pulse/non-pulse switch useable to select delivery of either pulsed or non-pulsed light therapy and wherein the first light treatment mode delivers light at a pulse width modulation frequency of about 680 Hz when pulsed light therapy is selected.
 10. A device according to claim 8 wherein the user interface further comprises a pulse/non-pulse switch useable to select delivery of either pulsed or non-pulsed light therapy and wherein the second light treatment mode delivers light at a pulse width modulation frequency of about 800 Hz when pulsed light therapy is selected.
 11. A device according to claim 8 wherein the user interface further comprises a pulse/non-pulse switch useable to select delivery of either pulsed or non-pulsed light therapy and wherein the third treatment mode delivers light at a pulse width modulation frequency of about 80 Hz when pulsed light therapy is selected.
 12. A device according to claim 1 wherein the pad member comprises: a pad; a formable member; a plurality of interconnected light-emitting circuit boards; translucent circuit board cover members positioned over the light emitting circuit boards; and a bezel having a plurality of openings; wherein the light-emitting circuit boards and the formable member are positioned on a side of the pad, the translucent circuit board cover members are positioned over the light emitting circuit boards and the bezel is affixed to the pad with the light-emitting circuit boards aligned with openings in the bezel.
 13. A device according to claim 12 wherein the formable member is positioned in an upper portion of the device.
 14. A device according to claim 13 wherein the formable member comprises an arcuate mid-portion traversing between two generally triangular end portions.
 15. A device according to claim 14 wherein rings are formed within each of the triangular end portions.
 16. A device according to claim 15 further comprising apertures extending through the pad member and passing through the rings formed within the triangular end portions of the formable member.
 17. A device according to claim 1 wherein the shapeable member is configured to be manually shaped to, and to retain, a plurality of different shapes which correspond to shapes of the shoulders, neck, chin and/or face areas of a subject.
 18. A method comprising the steps of: obtaining or providing a device according to claim 1; positioning the device over all, substantially all, most, more than half or a portion of a subject's body; and using the device to deliver light therapy to the subject.
 19. A light therapy blanket or body cover configured to cover all, substantially all or at least half of a subject's body and to deliver light therapy thereto.
 20. A light therapy blanket or body cover according to claim 19 wherein all or part of the blanket or body cover is flexible or formable to a configuration which conforms to a shape of an anatomical portion of the subject's body. 